1939 to 2000

Television broadcasting was suspended from 1 September 1939 to 7 June 1946, during the Second World War, and it was left to BBC Radio broadcasters such as Reginald Foort to keep the nation's spirits up. The BBC moved much of its radio operations out of London, initially to Bristol, and then to Bedford. Concerts were broadcast from the Corn Exchange; the Trinity Chapel in St Paul's Church, Bedford was the studio for the daily service from 1941 to 1945 and, in the darkest days of the war in 1941, the Archbishops of Canterbury and York came to St Paul's to broadcast to the UK and all parts of the world on the National Day of Prayer.
There was a widely reported urban myth that, upon resumption of the BBC television service after the war, announcer Leslie Mitchell started by saying, "As I was saying before we were so rudely interrupted ..." In fact, the first person to appear when transmission resumed was Jasmine Bligh and the words said were "Good afternoon, everybody. How are you? Do you remember me, Jasmine Bligh ... ?"^[29]
The European Broadcasting Union was formed on 12 February 1950, in Torquay with the BBC among the 23 founding broadcasting organisations.

BBC Television Centre at White City, West London, which opened in 1960 and closed in 2013.

Competition to the BBC was introduced in 1955, with the commercial and independently operated television network of ITV. However, the BBC monopoly on radio services would persist until 8 October 1973 when under the control of the newly renamed Independent Broadcasting Authority (IBA) the UK's first Independent local radio station, LBC came on-air in the London area. As a result of the Pilkington Committee report of 1962, in which the BBC was praised for the quality and range of its output, and ITV was very heavily criticised for not providing enough quality programming,^[30] the decision was taken to award the BBC a second television channel, BBC2, in 1964, renaming the existing service BBC1. BBC2 used the higher resolution 625 line standard which had been standardised across Europe. BBC2 was broadcast in colour from 1 July 1967, and was joined by BBC1 and ITV on 15 November 1969. The 405 line VHF transmissions of BBC1 (and ITV) were continued for compatibility with older television receivers until 1985.
Starting in 1964, a series of pirate radio stations (starting with Radio Caroline) came on the air and forced the British government finally to regulate radio services to permit nationally based advertising-financed services. In response, the BBC reorganised and renamed their radio channels. On 30 September 1967, the Light Programme was split into Radio 1 offering continuous "Popular" music and Radio 2 more "Easy Listening".^[31] The "Third" programme became Radio 3 offering classical music and cultural programming. The Home Service became Radio 4 offering news, and non-musical content such as quiz shows, readings, dramas and plays. As well as the four national channels, a series of local BBC radio stations were established in 1967, including Radio London.^[32]
In 1969, the BBC Enterprises department was formed to exploit BBC brands and programmes for commercial spin-off products. In 1979, it became a wholly owned limited company, BBC Enterprises Ltd.^[33]
In 1974, the BBC's teletext service, Ceefax, was introduced, created initially to provide subtitling, but developed into a news and information service. In 1978, BBC staff went on strike just before the Christmas of that year, thus blocking out the transmission of both channels and amalgamating all four radio stations into one.^[34][35]
Since the deregulation of the UK television and radio market in the 1980s, the BBC has faced increased competition from the commercial sector (and from the advertiser-funded public service broadcaster Channel 4), especially on satellite television, cable television, and digital television services.^{[citation needed]}
In the late 1980s, the BBC began a process of divestment by spinning off and selling parts of its organisation. In 1988, it sold off the Hulton Press Library, a photographic archive which had been acquired from the Picture Post magazine by the BBC in 1957. The archive was sold to Brian Deutsch and is now owned by Getty Images.^[36] During the 1990s, this process continued with the separation of certain operational arms of the corporation into autonomous but wholly owned subsidiaries of the BBC, with the aim of generating additional revenue for programme-making. BBC Enterprises was reorganised and relaunched in 1995, as BBC Worldwide Ltd.^[33] In 1998, BBC studios, outside broadcasts, post production, design, costumes and wigs were spun off into BBC Resources Ltd.^[37]
The BBC Research Department has played a major part in the development of broadcasting and recording techniques. In the early days, it carried out essential research into acoustics and programme level and noise measurement.^{[citation needed]} The BBC was also responsible for the development of the NICAM stereo standard.
In recent decades, a number of additional channels and radio stations have been launched: Radio 5 was launched in 1990, as a sports and educational station, but was replaced in 1994, with Radio 5 Live, following the success of the Radio 4 service to cover the 1991 Gulf War. The new station would be a news and sport station. In 1997, BBC News 24, a rolling news channel, launched on digital television services and the following year, BBC Choice launched as the third general entertainment channel from the BBC. The BBC also purchased The Parliamentary Channel, which was renamed BBC Parliament. In 1999, BBC Knowledge launched as a multi media channel, with services available on the newly launched BBC Text digital teletext service, and on BBC Online. The channel had an educational aim, which was modified later on in its life to offer documentaries.